I have been running a computer with Windows 2000 Professional with no problems. Today I loaded Windows XP Professional. The first message I got was the new program cannot update Windows 2000. Windows XP then continued to load Normally. The question is: How do I get the programs running under Win 2000 to load under Win XP? Do all the programs have to be reloaded? Once they are all running, I will remove Win 2000. What do you think?

Any program you want to run in Windows XP will probably have to be reinstalled just as if it was a brand new program.
I don't think the Files and Settings transfer wizard will work to transfer entire programs, but you can try it.
Hope you saved your installation disks and keys.

   If you had installed WinXP to update Win2000 (which as you said, it would not allow you to do), it would have added all of the installed programs in Win2000 to WinXP.  In this case, you would no longer have Win2000.  Some transitions from one Windows version to another can be done like this.
   Since that could not be done, WinXP was installed as a new and blank system which means that you will have to install all of the programs to it.